Loom attachment



May 30, 1939. c, 5,. PAGE 2,160,707

LOOM ATTACHMENT Filed Fb. s, 1936 E A? 1 1 zz 45 I @QIILQ W III Patented May 30, 1939 UNITED STATES 3 Claims.

Generically this invention relates to looms but it more especially comprehends an. improvement in shuttle-box tension controlling device for looms.

One of the principal objects of this invention is the provision of a simple and compact controlling mechanism, designed to eliminate wear of operating parts, so constructed and mounted as not to be thrown out of adjustment by the wear of the rocker arm shaft or other operating parts of the loom.

Another object of this invention is the provision of a device of this character adapted to be set to receive the shuttle with the desired binder pressure and without the additional pressure of the protection rod spring and operable to permit the instantaneous application of such additional pressure afterthe shuttle has fully entered the box. i

A further object of this invention is the provision of a device of this character adapted to permit the picker to throw the shuttle from the box free from protection spring pressure, and into the receiving box without said pressure, but per- 1 mitting such pressure to be again applied as soon as the shuttle is entirely in the box, thus reducing the power necessary to throw the shuttle and to lock it in the box before it can bounce or rebound, and equally applicable to difierent types of looms irrespective of whether their protection daggers rai e or fall to give protection.

An important object of this invention is the provision of a shuttle-box tension controlling mechanism adapted to be adjustablyset to entirely remove the pressure of the protection rod spring on the binder just before picking takes place, thereby greatly reducing the power required to throw the shuttle clear of the box and across the loom, or to permit a partial pressure of said spring on the receiving box if desired, and adjustable to compensate for any possible wear, such setting being unaffected by the wear of the rocker shaft bearing or other wearing parts of the loom.

With these and other objects in view, which will become apparent as the description proceeds, the invention resides in the construction, combination and arrangement of parts, hereinafter moreiully described and claimed, and illustrated in the accompanying drawing, in which like characters of reference indicate like parts throughout the several figures, of which:

Fig; l is an elevation partly in section of a loom illustrating my improved tension controlling: mechanism .operatively positioned.

Application February 5, 1936, Serial No. 62,529

Fig. 2 is a view taken on the line 22 of Fig. 1, and looking in the direction of the arrows.

Fig. 3 is a detail of the roller and cam.

I am aware that many eiiorts have been made tocontrol the manner in which the shuttle is .5 thrown from one shuttle-box and received in the opposite box, but the devices resulting from such efforts have presented varying disadvantages, such as complex structures, expensive to produce, difficult to install, not admitting of 10 effective adjustment, in some instances necessitating removal of the protection rod spring and in others defectively operating in conjunction therewith, and in some cases, in effecting control of the binders, requiring excessive picker l5 motive power to send the shuttle home across the loom, and none of such devices with which I am familiar are susceptible of compensating adjustment, or are unaffected by disalignment and wear of loom parts, and it was to overcome such deficiencies, and to provide a simple shuttle-box tension controlling device adapted to eiiectuate the throwing or" the shuttle from one shuttlebox through the warp and into the opposite box with a minimum of picker power drive, and with easy reception, and at the same time permitting its travel home in the receiving box, comprising an arm adjustably mounted on the protection rod and carrying a roller adjustable toward or away from the protection rod for effecting the raising 30 at proper intervals of the dagger carried by said rod, and a cam arm mounted on the pitman and adjustable thereon with respect to said roller and formed at its free end with a cam and notch structure coacting with said roller for controlling the binder presure with respect to the shuttle, the roller engaging in said notch, when the shuttle is not in the box, allowing the dagger to fall, thus permitting the loom to protect, that I designed the device for relieving the binders of the pressure ordinarily applied through the protection rod to the binders of the looms and to the shuttle while the same is in motion, and embracing only two main parts adjustable with respect to each other and their respective supporting 5 mediums and forming the subject matter of this invention.

In the illustrated embodiment characterizing this invention there is shown a lay 5 supported by lay sword 6 pivotally mounted at its lower end,

a protection rod 1 journalled in bearing 8 supported by sword 6 and suitably secured thereto by bolt 9 and nut iii threadedly engaged therewith, and integrally formed with or suitably secured to the protection rod 1 adjacent the inner edge of said sword 6 is a dagger II, which coacts with the protection motion in the usual manner which motion includes a contact element (not shown) which is engaged by the dagger to stop the loom in the event the shuttle (not shown) should fail to properly reach the shuttle-box at each end of the lay. A pitman or lay arm I2 is suitably connected to sword B by eccentric crank pin I3 suitably secured by stub bolts l4 threadedly engagable in ears l5 integrally formed on sword 6 adjacent its outer edge, the free end of said arm l2 being connected to crank shaft I6 by means of which structure rocking motion is imparted to the lay by the reciprocation of said pitman.

The above is conventional construction and is adapted to operate in conjunction with the protection spring, binders, binder fingers connected with the protection rod, pickers, shuttle and shuttle-box structure, all of which being of conventional design and operating in the well known manner, are not shown, and a detailed description of which is deemed unnecessary.

The invention is designed to relieve the binders of the looms of the pressure ordinarily applied through the protection rod to the binders and to the shuttle as it is about to receive the blow from the picker stick to send it across the lay and as it is received by the shuttle-box, and comprises an arm I! formed at one end with an enlarged portion I8 formed with an opening l9 adapted to receive protection rod 1 and to which it is adjustably secured by set screw 20. Said arm is formed adjacent its free tapered end with a longitudinal slot 2| adapted to receive one end of stud bolt 22 and adjustably secured therein by threaded nut 23. Suitably mounted on the opposite or inner end of said bolt 22 is a roller 24 secured by cotter pin 25, and mounted on said bolt adjacent the outer edges of arm I1 and roller 24 and intermediate said arm and roller are washers 26.

A cam arm 21 has its end portion 28 formed with spaced longitudinal slots 29 adapted to receive bolts 30 extending through pitman l2 and secured thereto by nuts 3|, and by means of which said cam arm is adjustably and firmly secured to the pitman. At the inner end of portion 28 said arm 21 is bent outwardly forming the ofiset 32 and then downwardly at an angle forming end section 33, the free end of which is formed with cam face 34 which extends beyond the lower edge of said section forming notch 35, said cam and notch being adapted to coact with roller 24 for a purpose directly more fully appearing.

In connection with the operation of the loom it is to be observed that the operation of the daggers, binders and shuttle from the protection rod is well understood, therefore, the operation of the instrumentalities for controlling the action of such parts in a manner to greatly eliminate frictional wear, and constituting an operating connection between the pitman or lay arm and the protection rod is as follows:

The movement of the pitman arm actuates cam 34 so that the roller carried by arm I! is in contact therewith as the shuttle enters and leaves the box, or while it is in motion, and when the shuttle is in the box the pressure of the protection rod is transferred from the cam to the binder and so on to the shuttle until the crank arm is raised on the backward stroke of the lay and the cam again takes the pressure off the binder as picking is about to take place, however as the protection dagger is about to pass over the frog (not shown) the pitman arm is in its lowest position and the cam is then elevated with respect to the eccentric pin of the pitman arm at which point, if the shuttle is not in the box, roller 24 will fall in notch 35 allowing dagger H to fall thus allowing the loom to protect, that is, causing stoppage of the loom.

While the general operation has been explained, in order to have a clear understanding of the complete operation of the device in connection with its adjustable range and attendant advantages it might be well to further state as follows:

Owing to the construction of the device and the adjustability of roller arm I! and cam arm 21 with respect to each other and protection rod 1 and pitman arm l2, respectively, the device can be set to receive the shuttle in the box with the normal binder pressure, but without the additional pressure of the protection rod spring. However, after the shuttle has fully entered the box, this additional pressure can be instantaneously applied.

This permits a better regulation of the pressure to receive the shuttle, in that, it can enter the box with less residual momentum, and still be held firmly after reaching the full depth of the box-to prevent bounding. The fact that the normal receiving pressure of the box can be lessened and still ample holding pressure for the shuttle in the box after entering be obtained, permits the operation of the loom with reduced power. To explain this further, the momentum of the shuttle, as it is thrown across the loom, must be suflicient to carry it fully home in the box. If there is a good deal of pressure on the binder of the receiving box, naturally more power is required to throw the shuttle home from the other box from which the shuttle has just been thrown.

The device can also be set so that the protection rod spring gives a partial pressure on the receiving box if desired. In addition to the foregoing, the device can be set to entirely remove the pressure of the protection rod spring on the binder just before picking takes place, thereby greatly reducing the power required to throw the shuttle clear of the box, and across the loom.

On this device only a very small amount of wear would ever take place, but even such wear as may take place can be easily compensated for by a simple adjustment. At this point, it is most important to state that even when wear occurs, or should this part become loose or break, the normal operation of the loom could immediately be restored by proper adjustment (requiring the additional power) without immediately readjusting this device. However, it is simpler to readjust and set the device than to make any other compensating adjustment on the loom.

The device is installed entirely on the lay and pitman arm of the loom, and therefore, as other parts and bearings of the loom wear, such adjustment is not affected. This is particularly true of the rocker shaft hearing, which is one of the points subject to greatest wear on the loom.

From the above it will be apparent that I have designed a simple shuttle box tension controlling device for looms which may with slight changes, and without affecting the spirit or scope of the invention, be placed under the pitman arm or other position as well as on the side as preferably described; one comprising few parts, simple in construction, applicable to various types of looms, presenting a wide range of adjustment, manufacturable at a negligible cost, and eflicient for the purposes intended.

Although in practice I have found that the form of my invention illustrated in the accompanying drawing and referred to in the above description as the preferred embodiment, is the most efiicient and practical; yet realizing the conditions concurrent with the adoption of my invention will necessarily vary, I desire to emphasize that various minor changes in details of construction, proportion and arrangement of parts, may be resorted to within the scope of the appended claims without departing from or sacrificing any of the principles of this invention.

Having thus described my invention, what I desire protected by Letters Patent is as set forth in the following claims:

1. A shuttle box tension controlling means adapted to cooperate with the binder tensioning assembly, the latter including the protection rod, spring and dagger, said means comprising an arm. adjustably connected to the protection rod and including a contact roller adjustable longitudinally of the arm, a plate connected to the pitman and longitudinally adjustable with respect thereto, an arm connected to the plate and extending outwardly and downwardly in offset relation with respect to the plate and formed with a notch and a cam end surface adapted to engage said contact roller, whereby the cam end surface and the roller are relatively adjustable with respect to the length of travel of the roller on said surface and relative to said notch to preclude lost motion and vary the extent of pressure of the protection rod spring on the binder in accordance with operating requirements.

2. A shuttle box tension controlling means adapted to cooperate with the binder tensioning assembly, the latter including the protection rod, spring and dagger, said means comprising an arm adjustably connected tothe protection rod and including a contact roller adjustable longitudinally of the arm, a plate connected to the pitman and longitudinally adjustable with respect thereto, an arm, connected to the plate and extending outwardly and downwardly in olfset relation with respect to the plate and formed with a cam end surface and a notch adapted to coact with said roller, whereby the cam surface and the roller are relatively adjustable to compensatingly preclude lost motion.

3. A shuttle box tension controlling means adapted to cooperate with the binder tensioning assembly, the latter including the protection rod, spring and dagger, said means comprising an arm adjustably connected to the protection rod, a roller carried by the arm and adjustable longitudinally thereof, a plate connected to the pitman and longitudinally adjustable with respect thereto, an arm connected to the plate and extending outwardly and downwardly and formed with a cam surface engageable with said roller for automatically controlling application of the protection rod spring pressure with respect to the shuttle, and notch means in said arm coacting with said roller for operating the dagger to effect stoppage of the 100m in the event the shuttle fails to properly box, whereby the protection rod and cam arms are adjustable, respectively, with respect to the protection rod and pitman, and the roller and cam surface are relatively adjustable to compensate for and preclude lost motion.

CLYDE ALEXANDER PAGE. 

